Merge 112364 - [chromium] Transfer wheel fling via WebCompositorInputHandlerClient

Merge 112364 - [chromium] Transfer wheel fling via WebCompositorInputHandlerClient
https://bugs.webkit.org/show_bug.cgi?id=81740

Patch by James Robinson <jamesr@chromium.org>; on 2012-03-27
Reviewed by Adrienne Walker.

Source/WebCore:

Adds the ability to construct an in-progress PlatformGestureAnimation.

* platform/ActivePlatformGestureAnimation.cpp:
(WebCore::ActivePlatformGestureAnimation::create):
(WebCore):
(WebCore::ActivePlatformGestureAnimation::ActivePlatformGestureAnimation):
* platform/ActivePlatformGestureAnimation.h:
(ActivePlatformGestureAnimation):
* platform/TouchpadFlingPlatformGestureCurve.cpp:
(WebCore::TouchpadFlingPlatformGestureCurve::create):
(WebCore::TouchpadFlingPlatformGestureCurve::TouchpadFlingPlatformGestureCurve):
* platform/TouchpadFlingPlatformGestureCurve.h:
(TouchpadFlingPlatformGestureCurve):

Source/WebKit/chromium:

Adds a path for transfering an active wheel fling animation out to the embedder from the compositor and back in
to a WebViewImpl via the embedder. This is used when we start a wheel fling animation on the compositor thread
but then hit a condition that we can't handle from the compositor, such as registered wheel event listeners or a
scrollable area we can't handle.

New tests added to WebCompositorInputHandlerTest for the transfering logic.

* public/WebActiveWheelFlingParameters.h: Copied from Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h.
(WebKit):
(WebActiveWheelFlingParameters):
(WebKit::WebActiveWheelFlingParameters::WebActiveWheelFlingParameters):
* public/WebCompositorInputHandlerClient.h:
(WebKit):
(WebCompositorInputHandlerClient):
(WebKit::WebCompositorInputHandlerClient::transferActiveWheelFlingAnimation):
* public/WebView.h:
(WebKit):
(WebView):
* src/WebCompositorInputHandlerImpl.cpp:
(WebKit::WebCompositorInputHandlerImpl::handleGestureFling):
(WebKit::WebCompositorInputHandlerImpl::animate):
(WebKit::WebCompositorInputHandlerImpl::cancelCurrentFling):
(WebKit::WebCompositorInputHandlerImpl::scrollBy):
* src/WebCompositorInputHandlerImpl.h:
(WebCore):
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::transferActiveWheelFlingAnimation):
(WebKit):
* src/WebViewImpl.h:
(WebViewImpl):
* tests/WebCompositorInputHandlerImplTest.cpp:
(WebKit::MockWebCompositorInputHandlerClient::MockWebCompositorInputHandlerClient):
(MockWebCompositorInputHandlerClient):
(WebKit::TEST):
(WebKit::WebCompositorInputHandlerImplTest::WebCompositorInputHandlerImplTest):
(WebKit::WebCompositorInputHandlerImplTest::~WebCompositorInputHandlerImplTest):
(WebCompositorInputHandlerImplTest):
(WebKit::TEST_F):
(WebKit):

TBR=commit-queue@webkit.org
BUG=118779
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=112614